Brain scanners can tell what you're thinking about

http://www.newscientist.com/article/mg20427323.500-brain-scanners-can-tell-what-youre-thinking-about.html, Oct. 28, 2009

Neuroscientists can now use "neural decoding" to recreate moving images that volunteers are viewing, read memories and future plans, diagnose eating disorders, and detect which of two nouns a subject is thinking of, all at rates well above chance.